Mark Guilbeau, senior investigator with the Fulton County Medical Examiner's office in Atlanta, said an autopsy will be conducted Sunday, and results are expected by afternoon.

Forrest was the International Boxing Federation welterweight champion in 2001, the World Boxing Council welterweight champion in 2002-2003, and the WBC light welterweight champion in 2007-2008 and 2008-2009, according to the BoxRec Web site.

He was named the World Boxing Hall of Fame fighter of the year in 2002, according to BoxRec.